Map
General Information
| Postal Area | Buckinghamshire |
| Postcode | SL1 1YN |
| User Type | Large (more than 25 items of mail per day) |
| Region | South East |
| Country | England |
| Local authority | Slough |
| Introduction Date | 1996-06-01 |
| Termination Date | 1997-06-01 |
Geographic Information
| Latitude | 51.5088090 |
| Longitude | -0.5867490 |
| Easting | 498176 |
| Northing | 179822 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |